Bankr X402 SDK Client Patterns

This is boilerplate client code for Bankr's x402 SDK that gives you a ready-made foundation for new projects. You get a core client module with environment validation baked in, so you're not rewriting the same authentication and config setup every time you spin up a Bankr integration. The repository sits in bankrbot's claude-plugins collection with 78 GitHub stars. Honestly, this is the kind of thing that saves you 30 minutes of setup work but isn't much to look at until you've built three Bankr projects and wished you'd standardized earlier. If you're already in the Bankr ecosystem, grab it. If you're not, it won't mean much to you.

GitHub stars: 80
last updated: Aug 21, 2026

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Install

$ npx -y skills add bankrbot/claude-plugins --skill 'Bankr x402 SDK - Client Patterns' --agent claude-code

Installs into .claude/skills of the current project.

Files

x402 SDK Client Patterns

Reusable client code and common files for Bankr SDK projects.

bankr-client.ts

The core SDK client module for all Bankr SDK projects:

import "dotenv/config";
import { BankrClient } from "@bankr/sdk";

// ============================================
// Validation
// ============================================

if (!process.env.BANKR_PRIVATE_KEY) {
  throw new Error(
    "BANKR_PRIVATE_KEY environment variable is required. " +
      "This wallet pays $0.01 USDC per request (needs USDC on Base)."
  );
}

// ============================================
// Client Setup
// ============================================

SKILL.md on GitHub

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